所有材料未经甲方同意乙方私自使用的材料经检验，材料存在有质量问题的，其

所有材料未经甲方同意乙方私自使用的材料经检验，材料存在有质量问题的，其材料制作安装返工费用均由乙方自行负责。

結果 (英文) 1:

Without party a party b private use of materials all materials tested, materials quality issue exists, its material production and installation of rework costs by the party itself.

結果 (英文) 2:

All materials without the consent of Party B unauthorized use of materials on examination, the quality of the material is present, its rework material fabrication and installation costs by B themselves.

結果 (英文) 3:

All materials without Party A Party B without the consent of Party B without the use of the material, the material has the quality of the problem, the material production and installation of rework costs by Party B is responsible for.